NAT II Physical Science Physics With Answers

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NAT II Physical Science Physics

Sr. # Questions Answers Choice
1 A body moving in circular motion with constant speed has Constant velocity Constant acceleration Constant kinetic energy Constant displacement
2 A 2 kg body and a 3 kg body have equal momentum. If the kinetic energy of 3 kg body is 10 J, the KE of 2 kg body will be 6.66 J 15 J 22.5 J 45 J
3 A particle moves along a circular path under the action of a force. The work done by the force is Zero Positive and non-zero Negative and non zero None of the above
4 A man pushes a wall but fails to displace it. He does: Negative work Maximum positive work Positive work but not maximum No work
5 A bullet is shot from a rifle. As a result the rifle recoils. The kinetic energy of rifle as compared to that of bullet is Less Greater Equal Cannot be concluded
6 How much water a pump of 2kW can raise in one minute to a height of 10 m, take g = 10 m/s2? 1000 liters 1200 liters 100 liters 2000 liters
7 A body of mass 2 kg is thrown up vertically with K.E. of 490 joules. If the acceleration due to gravity is 9.8 m/s2, the height at which the K.E, of the body becomes half its original value is given by: 50 m 12.5 m 25 m 10 m
8 A body moves a distance of 10 m along a straight line under the action of a force of 5 Newton's. If the work done is 25 joules, the angle which the force takes with the direction of motion of the body is: 0<b style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">°</b> 30<b style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">°</b> 60<b style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">°</b> 90<b style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">°</b>
9 Which of the following four statement is false? A body can have zero velocity and still be accelerated A body can have a constant velocity and still have a varying speed A body can have a constant speed and still have a varying velocity The direction of the velocity of a body can change when its acceleration is constant
10 The initial velocity of a body moving along a straight line in 7 m/s. It has a uniform acceleration of 4 m/s2. The distance covered by the body in the 5th second of its motion is 25 m 35 m 50 m 85 m
11 A boy is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about 80 m 20 m 160 m 40 m
12 What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey? 4 : 5 7 : 9 16 : 25 1 : 1
13 A train of 150 m length is going towards north direction at a speed of 10 ms-1. A parrot flies at a speed of 5 ms-1towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to 12 s 8 s 15 s 10 s
14 The sum of the magnitude of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90°with the force of the smaller magnitude, then their magnitudes are: 3, 15 4, 14 5, 13 6, 12
15 A motorist travels A to B at a speed at 40 km/h and returns at speed of 60 km/h. His average speed will be 40 km/h 48 km/h 50 km/h 60 km/h
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